| Animals by Skeleton Image | 0 | - | 4.81 | 46,961 |
| Former Countries by Territory Map | 0 | - | 4.96 | 103,981 |
| Empires by Maps | 0 | - | 4.98 | 122,194 |
| Merged Company Logos #1 | 0 | - | 4.90 | 107,458 |
| Elements by Picture | 0 | - | 4.27 | 70,331 |
| Rocks and Minerals Picture Quiz | 0 | - | 4.48 | 29,517 |
| Islands by Shape #2 | 0 | - | 4.88 | 59,553 |
| Planets By Picture Quiz | 0 | - | 4.49 | 57,404 |
| Visual Memory Test - Random Cartoons | 0 | - | 4.98 | 105,389 |
| Play-Doh People from History | 0 | - | 4.99 | 95,608 |
| Circular Cutouts from a World Map | 0 | - | 4.98 | 62,142 |
| All Country Flags of the World | 0 | - | 5.00 | 3,716,158 |
| Metals of Antiquity | 0 | - | 4.95 | 93,945 |
| Years in History by Picture | 0 | - | 4.45 | 35,848 |
| Famous Foreheads #1 | 0 | - | 4.47 | 75,458 |
| Country Flags Quiz #1 | 0 | - | 4.98 | 2,546,369 |
| Country Flags Quiz #2 | 0 | - | 4.99 | 1,097,414 |
| Country Flags Quiz #3 | 0 | - | 4.97 | 736,592 |
| Animals - Taxonomy to Common Name | 0 | - | 4.81 | 28,497 |
| Name that Object #1 | 0 | - | 3.57 | 96,638 |
| Make a Stained Glass Window | 0 | - | 5.00 | 69,102 |
| Flags with Crescents | 0 | - | 4.98 | 171,427 |
| Country Flag Trivia | 0 | - | 4.81 | 58,091 |
| Country Flags with Eagles - Picture Quiz | 0 | - | 4.98 | 104,954 |
| Country Flags with the Union Jack | 0 | - | 4.87 | 78,476 |
| Pixelated Flag Quiz | 0 | - | 4.97 | 88,658 |
| Flag Emblems Scavenger Hunt | 0 | - | 5.00 | 67,986 |
| Flags by Horizontal Stripes #1 | 0 | - | 4.84 | 86,024 |
| Country Flags with the Sun - Picture Quiz | 0 | - | 4.81 | 53,516 |
| Ultimate Car Logos Quiz | 0 | - | 4.81 | 184,265 |
| National Football Team Logos | 0 | - | 4.85 | 181,957 |
| Countries with the Highest Carbon Dioxide Emissions | 0 | - | 4.98 | 110,027 |
| Old Movies by Picture | 0 | - | 4.51 | 25,274 |
| Musical Instruments by Picture #2 | 0 | - | 4.24 | 47,311 |
| Random Logos Quiz | 0 | - | 4.33 | 209,725 |
| Pictures by Letter - A | 0 | - | 4.18 | 33,656 |
| Pictures by Letter - J | 0 | - | 4.31 | 40,286 |
| Pictures by Letter - B | 0 | - | 4.32 | 44,271 |
| Pictures by Letter - D | 0 | - | 4.14 | 37,815 |
| Pictures by Letter - M | 0 | - | 4.24 | 38,019 |
| The Voyage of Darwin - Animated Map Quiz | 0 | - | 4.99 | 14,602 |
| Fruits by Picture | 0 | - | 4.19 | 809,489 |
| Geography by Picture - B | 0 | - | 4.42 | 55,785 |
| Geography by Picture - H | 0 | - | 4.50 | 58,385 |
| Geography by Picture - N | 0 | - | 4.45 | 42,345 |
| Geography by Picture - R | 0 | - | 4.56 | 41,151 |
| Geography by Picture - T | 0 | - | 4.54 | 58,006 |
| Flags to Languages | 0 | - | 4.95 | 174,545 |
| All North American Pro Sports Logos | 0 | - | 4.72 | 116,463 |
| Similar Country Flags - Multiple Choice Quiz | 0 | - | 4.94 | 51,055 |
| Countries with Glaciers | 0 | - | 4.97 | 105,820 |
| Body Parts in History and Culture | 0 | - | 4.43 | 35,449 |
| Countries Reducing Carbon Dioxide Emissions the Most | 0 | - | 4.89 | 64,980 |
| Countries with the Most Forest | 0 | - | 4.87 | 148,003 |
| Name that Object #2 | 0 | - | 3.63 | 15,530 |
| Name that Object #3 | 0 | - | 3.93 | 14,471 |
| Pick a Picture - Animal Relations | 0 | - | 4.94 | 55,896 |
| Name that Historical Figure #1 | 0 | - | 4.63 | 339,951 |
| Name the Pixelated Landmark | 0 | - | 4.85 | 63,474 |
| Car Logos Quiz #1 | 0 | - | 4.52 | 544,360 |
| Pictures by Letter - E | 0 | - | 3.51 | 34,665 |
| Pictures by Letter - G | 0 | - | 4.14 | 28,395 |
| Pictures by Letter - L | 0 | - | 4.14 | 30,775 |
| Pictures by Letter - F | 0 | - | 4.18 | 29,275 |
| Pictures by Letter - Z | 0 | - | 4.05 | 23,606 |
| Pictures by Letter - Y | 0 | - | 4.21 | 26,461 |
| Pictures by Letter - R | 0 | - | 4.05 | 24,940 |
| Pictures by Letter - K | 0 | - | 4.18 | 25,302 |
| Pictures by Letter - I | 0 | - | 4.16 | 30,589 |
| Pictures by Letter - N | 0 | - | 4.11 | 24,667 |
| Pictures by Letter - P | 0 | - | 4.05 | 26,211 |
| Pictures by Letter - U | 0 | - | 4.10 | 20,941 |
| Pictures by Letter - T | 0 | - | 4.34 | 27,870 |
| Three Real and One Fake - Country Flags | 0 | - | 4.97 | 84,763 |
| Name the Constellations - With a Map | 0 | - | 4.91 | 36,227 |
| Name that Bug | 0 | - | 4.12 | 45,646 |
| Islands by Shape #1 | 0 | - | 4.33 | 84,521 |
| 1970s Celebrities by Picture #1 | 0 | - | 4.20 | 58,286 |
| 1970s Celebrities by Picture #2 | 0 | - | 4.21 | 50,988 |
| Islands by Picture | 0 | - | 4.28 | 107,822 |
| Classic Movies by Movie Posters | 0 | - | 4.45 | 24,462 |
| Animals by Close-up Image | 0 | - | 4.42 | 219,098 |
| Aquatic Mammals by Picture | 0 | - | 4.41 | 46,029 |
| Extinct Animals by Picture | 0 | - | 4.49 | 35,494 |
| Mammals by Picture #1 | 0 | - | 4.70 | 92,480 |
| 1940s Celebrities by Picture | 0 | - | 4.43 | 48,223 |
| International Footballers by Picture | 0 | - | 4.51 | 56,460 |
| Name that Historical Figure #2 | 0 | - | 4.42 | 286,457 |
| Name that Historical Figure #5 | 0 | - | 4.43 | 108,925 |
| Name that Historical Figure #7 - U.S. Edition | 0 | - | 4.51 | 51,383 |
| Geography by Picture - A | 0 | - | 4.39 | 60,440 |
| Geography by Picture - D | 0 | - | 4.15 | 45,791 |
| Geography by Picture - F | 0 | - | 4.31 | 51,182 |
| Geography by Picture - G | 0 | - | 4.39 | 48,085 |
| Geography by Picture - J | 0 | - | 4.16 | 38,598 |
| Geography by Picture - K | 0 | - | 4.29 | 33,250 |
| Geography by Picture - C | 0 | - | 4.31 | 57,240 |
| Geography by Picture - L | 0 | - | 4.37 | 59,142 |
| Geography by Picture - M | 0 | - | 4.14 | 40,585 |
| Geography by Picture - P | 0 | - | 4.24 | 42,571 |
| Geography by Picture - S | 0 | - | 4.38 | 47,184 |
| Miscellaneous Flags Quiz | 0 | - | 4.42 | 282,158 |
| Flag Maths | 0 | - | 4.61 | 57,852 |
| Satellite Images #1 | 0 | - | 4.46 | 130,013 |
| Satellite Images Quiz #2 | 0 | - | 4.64 | 109,709 |
| Satellite Images Quiz #4 | 0 | - | 4.55 | 89,406 |
| Satellite Images Quiz #5 | 0 | - | 4.52 | 50,256 |
| Satellite Images Quiz #6 | 0 | - | 4.50 | 39,231 |
| Cities by Picture #1 | 0 | - | 4.74 | 86,599 |
| Soccer Team Logos | 0 | - | 4.26 | 377,809 |
| Car Logos Quiz #2 | 0 | - | 4.43 | 264,007 |
| Video Game Logos Quiz | 0 | - | 4.40 | 185,123 |
| Movie Logos | 0 | - | 4.33 | 240,505 |
| Brand Logos That Start with A | 0 | - | 4.52 | 71,213 |
| History by Picture - A | 0 | - | 4.26 | 46,164 |
| History by Picture - B | 0 | - | 4.40 | 49,363 |
| History by Picture - C | 0 | - | 4.33 | 54,901 |
| History by Picture - F | 0 | - | 4.35 | 38,209 |
| History by Picture - G | 0 | - | 4.40 | 42,450 |
| History by Picture - D | 0 | - | 4.29 | 44,668 |
| History by Picture - E | 0 | - | 4.25 | 44,248 |
| History by Picture - H | 0 | - | 4.37 | 37,095 |
| History by Picture - K | 0 | - | 4.35 | 33,631 |
| History by Picture - M | 0 | - | 4.17 | 36,407 |
| History by Picture - N | 0 | - | 4.40 | 41,543 |
| History by Picture - O | 0 | - | 4.39 | 36,564 |
| History by Picture - T | 0 | - | 4.20 | 33,553 |
| Name that Nut, Seed, or Bean | 0 | - | 4.57 | 57,807 |
| Countries with the Most HIV | 0 | - | 4.46 | 44,539 |
| Countries with the Most Malaria Deaths | 0 | - | 4.45 | 45,562 |
| Countries that Desalinate the Most Water | 0 | - | 4.77 | 41,912 |
| 1980s Movie Silhouettes | 0 | - | 4.97 | 104,712 |
| Country Flags Multiple Choice | 0 | - | 4.97 | 145,478 |
| Brand Logos Quiz #1 | 0 | - | 4.83 | 2,439,161 |
| Art Works Picture Quiz #1 | 0 | - | 4.51 | 119,840 |
| Art Works Picture Quiz #2 | 0 | - | 4.49 | 105,877 |
| Musical Instruments by Picture #1 | 0 | - | 4.52 | 269,816 |
| Foods by Picture | 0 | - | 3.81 | 226,674 |
| Flowers by Picture | 0 | - | 4.46 | 105,872 |
| Junk Foods by Picture | 0 | - | 3.69 | 96,784 |
| Art Works Picture Quiz #3 | 0 | - | 4.45 | 48,956 |
| Christmas by Picture | 0 | - | 4.26 | 28,234 |
| Hats by Picture | 0 | - | 4.21 | 18,021 |
| Weapons by Picture | 0 | - | 4.13 | 21,199 |
| Cars by Picture | 0 | - | 3.89 | 41,829 |
| Reptile Picture Quiz | 0 | - | 4.32 | 14,386 |
| Authors by Picture | 0 | - | 4.48 | 25,637 |
| Plants by Picture | 0 | - | 4.24 | 14,523 |
| Fruit and Vegetable Emojis | 0 | - | 4.45 | 90,967 |
| WWII Figures by Picture | 0 | - | 4.89 | 66,299 |
| College Sports Logos Quiz #3 | 0 | - | 4.30 | 56,187 |
| Songs by Picture Quiz #1 | 0 | - | 4.68 | 66,523 |
| Songs by Picture Quiz #2 | 0 | - | 4.42 | 59,330 |
| Fish by Picture #1 | 0 | - | 4.41 | 109,072 |
| Animals A-Z by Picture | 0 | - | 4.08 | 66,879 |
| Mammals by Picture #3 | 0 | - | 4.39 | 62,518 |
| Mammals by Picture #4 | 0 | - | 4.03 | 34,358 |
| Birds by Picture #1 | 0 | - | 4.47 | 42,070 |
| Mammals by Picture #2 | 0 | - | 4.28 | 58,581 |
| Oscar Nominated Actors by Picture #1 | 0 | - | 4.42 | 165,811 |
| 1960s Celebrities by Picture #1 | 0 | - | 4.27 | 70,779 |
| 1960s Celebrities by Picture #2 | 0 | - | 4.26 | 51,689 |
| 1950s Celebrities by Picture #1 | 0 | - | 4.24 | 51,382 |
| 1980s Celebrities by Picture #2 | 0 | - | 4.19 | 72,139 |
| 1990s Celebrities by Picture #1 | 0 | - | 4.14 | 79,788 |
| 1990s Celebrities by Picture #2 | 0 | - | 4.16 | 72,849 |
| 2000s Celebrities by Picture #2 | 0 | - | 4.15 | 96,117 |
| Women in History by Picture | 0 | - | 4.25 | 26,040 |
| 1950s Celebrities by Picture #2 | 0 | - | 4.29 | 46,358 |
| Famous Foreheads #2 | 0 | - | 3.17 | 15,862 |
| Name that Historical Figure #3 | 0 | - | 4.36 | 244,178 |
| Name that Historical Figure #4 | 0 | - | 4.29 | 160,471 |
| Name that Historical Figure #6 | 0 | - | 4.26 | 94,396 |
| Musicians by Picture #1 | 0 | - | 4.38 | 110,104 |
| Musicians by Picture #2 | 0 | - | 4.29 | 77,439 |
| Musicians by Picture #4 | 0 | - | 4.07 | 65,643 |
| Musicians by Picture #3 | 0 | - | 4.10 | 59,586 |
| Geography by Picture - E | 0 | - | 3.55 | 47,496 |
| Landforms by Picture | 0 | - | 4.31 | 20,750 |
| Geography by Picture - I | 0 | - | 4.00 | 39,538 |
| Geography by Picture - O | 0 | - | 4.01 | 28,246 |
| Emoji Flags | 0 | - | 4.35 | 44,295 |
| Fill the Map of Europe by Guessing Flag Colors | 0 | - | 4.69 | 38,243 |
| Languages by Combined Flags | 0 | - | 4.53 | 100,685 |
| Satellite Images Quiz #3 | 0 | - | 4.35 | 73,664 |
| Satellite Images - Island Chains | 0 | - | 4.43 | 67,003 |
| Islands by Satellite Image #1 | 0 | - | 4.70 | 71,297 |
| Peninsulas by Satellite Image | 0 | - | 4.53 | 27,931 |
| Landmarks Picture Quiz #1 | 0 | - | 4.16 | 395,736 |
| Airline Logos | 0 | - | 4.45 | 141,467 |
| Fast Food Logos Quiz | 0 | - | 4.45 | 249,579 |
| Mostly-American Candy Logos | 0 | - | 4.14 | 160,003 |
| Brand Logos That Start With M | 0 | - | 4.38 | 63,579 |
| Brand Logos That Start With S | 0 | - | 4.37 | 58,337 |
| Brand Logos That Start With B | 0 | - | 4.38 | 60,705 |
| Brand Logos That Start With D | 0 | - | 4.37 | 62,240 |
| Brand Logos That Start With L | 0 | - | 4.40 | 61,947 |
| Brand Logos That Start With C | 0 | - | 4.21 | 50,166 |
| Pictures by Letter - H | 0 | - | 3.97 | 30,671 |
| Pictures by Letter - C | 0 | - | 4.00 | 30,415 |
